Hi @cksiva09,
I checked the console and I am seeing from Javascript error that is coming from the templates-and-addons-for-wpbakery-page-builder
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Please note that the mobile menu runs through a Javascript code and since the plugin mentioned is generating an error, it causes issues with the other elements on the page.
X, Cornerstone and Pro coding adheres to the latest Wordpress coding standards and convention. However, we cannot make sure that all plugins available online will work as expected due to the fact that there is simply no way to account for all of the potential variables at play when using another developer’s plugin or script. Because of this, any questions you have regarding setup, integration, or troubleshooting any piece of functionality that is not native to X will need to be directed to the original developer.